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. Author manuscript; available in PMC: 2013 Mar 9.
Published in final edited form as: Vaccine. 2012 Jan 2;30(12):2220–2227. doi: 10.1016/j.vaccine.2011.12.090

Figure 4. Shedding of NDV challenge virus in chickens previously immunized with the other APMV serotypes.

Figure 4

From the challenge experiment in Figure 3, oral (A) and cloacal (B) swabs were collected from the 8 birds in each group on day 4 post challenge and virus titers were determined by a limiting dilution assay on DF-1 cells. Titers are expressed as means with the SEM indicated, and titers above the dotted line (1.0 log10) were considered positive. Statistical differences by one-way ANOVA nonparametric test had shown a significant P value (P< 0.0001).